Readers who selected China came out top, followed by Montenegro, South Korea, Poland and Saudi Arabia.

Readers were more accurate than national averages for all 11 questions polled, with two exceptions: the proportion of adults who are overweight or obese and the proportion who live in rural areas.

Obesity

Immigration

Like most people, Guardian readers overestimate the number of immigrants that live in a country. However, the error among readers is smaller than broader public opinion in all nations surveyed, except for Montenegro, South Korea, and Israel.

Religion

Japan and South Korea are the only two countries where people understate the proportion of the population that is unaffiliated to any religion.

Everywhere else, both the wider population and Guardian readers overestimate the number, with the largest error among the newspaper’s respondents occurring in answers about Sweden and Norway. However, the error among readers is smaller compared with that of Ipsos respondents.

The 1%

The majority of Guardian readers overestimate how much the wealthiest 1% own of household wealth, with the greatest error in answers about Britain and Australia.

Conversely, responses about Poland were the closest to the actual figure.

Young adults living with their parents

Guardian respondents underestimated the number of young adults (25- to 34-years-old) that live with their parents in four countries: Serbia, Italy, Hungary, and Poland.

Answers about young Britons were furthest from the actual figure among the countries surveyed on this particular question.

People living in rural areas

Alongside the question about obesity, this was the only other query where Guardian respondents did worse than the population at large. Answers about Serbia and India underestimated the percentage of people living in a rural area in that country, while everywhere else respondents overshot – and in most cases by a lot.

Average age

In all countries surveyed, Guardian readers and the wider population overestimate – with varying degrees of error – the average age in a country.

Further information and data tables from the Ipsos Mori survey can be found here.